Godet wheel for artificial silk spinning machines



April 12, 1932.A C. w. LAWSER GODET WHEEL FOR :ARTIFICIAL SILK SPINNINGMACHINES Filed March 5, 1929 FIG. Z1

Var/

INVENTOR: Charles WLan/.361;

A TToRNEYs.

WITNESSES naar orties v(IiHl-)LRLES W. LAWSER, OF BALA, PENNSYLVANIA,ASSIGNOR T THE WICACO MACHINE CORPORATION, 0F PHILADELPHIA,PENNSYLVANIA, A CORPORATION OF PENNSYL- GODET WHEELFOR ARTIFICIAL SILKSPINNING MACHINES Application filed March V5, 1929. Serial No. 344,347.

This invention relates to godet wheels such as are used in articial silk(rayon) spin-I ning machines to draw upon the filamentsof the celluloseas they issue from the capillaries ,5' of the spinnerettes, and todeliver the bunched filaments, so formed to the funnel guides servingthe rotating pots by action of which said filaments are twisted intoyarns, and the yarns concurrently would under centrifugal action, intothe form of annular cakes.

Such wheels are customarily made from glass; and, as heretoforeconstructed, their center holes were invariably larger than actuallyrequired due to shrinkagein the process of molding. Accordingly, inmounting the wheels on their driving spindles, they had to beindividually centralized to prevent wobble and attendant harmfulstretching of the cellulose filaments at high speeds. The

operation of properly mounting the wheels under this condition was notonly tedious, but consumed considerable time in its accomplishment, andwas therefore expensive from the standpoint of economic operation anmaintenance of the spinning machines.

My invention is directed in part toward overcoming the above indicatedhandicaps of lprevious practice in this art; that is to say: I aim,through novel construction of the wheels, to dispense with the necessityfor the individual centralizing operation heretofore required, and toattain this desideratum without added expense in the cost ofmanufacturing the wheels.

My invention is also in part directed toward preventinge-likewisethrough novel construction of the godet wheelsw-entry of fluid drip orsplash into the journal boxes supporting the wheel spindles.

Still other objects and attendant advantages inherent in this inventionwill be manifest from the detailed description following when taken inconnection with the attached drawings.

Fig. I shows a fragmentary cross section through a rayon spinningmachine equipped with my improved godet wheels.

Fig. II is a longitudinal sectional view of one of the godet wheelmountings on a larger scale; and,

Fig. III is a frontal face view of my improved godetwheel.

The spinning machinechosen for the purwheels 6 at the top of themachine, and by said wheels redirected to pass downward into the funnelguides 7 These funnel guides7 are mounted on longitudinal supportingrails 8 attached to vertical slide rods 9 which are pivotally connectedat their tops to opposite extremities of a rocking beam 10 secured to ashaft 11, said shaft having journal support in central bearings of themachine frame 5 and being constantly oscillated by suitable d means notshown. The parts just described constitute a motion by which thecellulose filaments F directed through the vertically reciprocatingfunnel guides 7 are built, layer by layer, into the form of cakes asthey are twisted incident to being thrown by centrifugal action againstthe inside walls of the revolving receiving pots partly' shown at 12.Also, after common practice, the godet wheels 6 are mounted on spindles13 which extend through journal boxes 111 fitted at opposite ends withball bearings 15, as well as with protective packing rings 16.v As shownin Fig. I, the journal boxes 14 are supported on the top of the machineframe 5 at a slight inclination to the horizontal, and symmetricallygrouped in pairs so that ythe spindles 18 may be driven, through theniedium of bevel gears 17, 18, from a centrally disposedlongitudinallyextending master shaft 19.

VAlthough intended to function in the same manner, it will be observedthat my improved godet wheel 6, as detailed in Figs. II and IIfI,differs from those of customary construction in that it is provided atthe in side with a convergent central opening 20, which terminates in anaxial hub cavity 21. rlhis cavity is occupied by a round edged polygonalsecuring nut 22 which, while restrained against rotation, has freedomfor a certain amount of lateral play for a purpose later on explained.It will also be noted that the spindle 13 is, in the present instance,formed with a tapered shoulder 23 to fit the convergent central opening`2O in the wheel 6, and beyond said shoulder, with a diametricallyreduced threaded axial prolongation 2a adapted to engage the securingnut 22.

To prevent entry into the journal box let of corrosive iiuid carriedalong by the filaments F and thrown off as drip or splash by the godetwheel 6 incident to rotation high speeds, I provide said wheel, inaddition to the usual peripheral flange 25., with a concentric annularflange 26 at the back arranged to proiect into a correspondinglyconfigured recess 27 in the contiguous end of the ournal box 14.

In pr ctice, the threads 24 are made either right hand or lefthand-depending on the direction of spindle rotation-so that the godetwheel 6 can be mounted simply by bringing it up to the end of thespindle 1.3 while the latter is revolving. r-"is the nut 22 takes hold,the wheel 6 is obviously drawn upon, and automatically centralizedthrough coaction of the tapered shoulder 3 and t .ie convergent surfaceat 20, said nut adapting itself to the described coaction as permittedthrough the lateral freedom accorded it within the cavity 21 untiltightening takes place. This entire operation consumes but a moment, anddispenses with the tedious centering by repeated trials as requiredvvitl godet Wheels of previous designs. The securing nut 22 is of courseincorporated in the wheel, i. e. placed during the process. of moulding,and, by virtue of being enclosed in the hub. cavity 21, is completelysurrounded and therefore protected, like the bearings 15 in the journalbox 14e, against injury from drip or splash of the corrosive fluids castoff by the rapidly passing cellulose .filamentsv F. Moulding of anyimproved godet wheels 6 presents no difliculties over the method ofprocedure ordinarily followed nor, is it attended by increase in thecost of their manufacture as compared to godet wheels of the usualconstruction.

Having thus described my invention, I claim:

1. A godet wheel, for rayon spinning machines, having an internal cavitywith a convergent approach adapted'to coact with a correspondinglytapered shoulder on a driving spindle in determining self-centralizationof the wheel incident to mounting, an incorporated securing nut looselymounted in the cavity to accommodate lateral` movement and engaging athreaded axial prolongation of the spindle, and means to preventrotation of the nut.

2. A godet Wheel, for rayon spinning machines, made from glass or thelike having a central internal hub cavi ty with a convergent approachadapted to coact with a tapered shoulder on a driving spindle indetermining self-centralization of the wheel incident to mounting, amolded-in securing nut loosely mounted in the cavity to accommodatelateral movement and engaging a threaded axial prolongation of thespindle, and means to prevent rotation of said nut in the hub cavity.

3. A godet wheel, for rayon spinning machines, having a centralpolygonal-section hub-cavity ope-ning with a convergent approach adaptedto coact with a tapered shoulder on a driving spindle in determiningselfcentralization of the wheel incident to mounting, and a securing nutprotected wit-hin the hub cavity at the terminus of the wheel openingfor engaging a threaded end prolongation of the driving spindle, saidnut being of polygonal contour with rounded edges and loosely mounted inthe cavity to respectively prevent its rotation and to accommodatelateral movement thereof.

4. As a new article of manufacture a godet wheel, for rayon spinningmachines, having an internal shaft-end receiving angularlyshaped cavitywith a convergent approach and an integral annular guard flange aboutsaid approach.

5. As a new article of manufacture a godet wheel of frangible material,for rayon spinning machines, having an intern al axial shaftendreceiving polygonally-contoured hub cavity with a convergent approachand an integrally-formed annular laterally-projecting guard flangeconcentrically about said ap,- proach.

6. As a new articley of manufacture a godet wheel of frangible materialfor rayon spinning machines, having an axial shaft-.end re-vceivingpol'gonally-contoured hub-.cavity with an incorporated similarlyshaped nutcapable of lateral movement, said cavity having a convergentapproach, and an integrally-formed annular laterally-projecting guardflange concentrically about said approach.

in testimony whereof I have hereunto signed my name at Philadelphia,Pennsylvania, this 28th day of February, 1929.l

CHARLES W LAl/VSER.

